package com.ruoyi.uitity;

import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.net.URL;
 import java.net.URLConnection;
 /**
  * @description: 微信登陆工具类
  * @author jianfei.ma
  * @ClassName:GetOpenIdUtil
  * @date:2020/2/18 001816:43
  */
 public class GetOpenIdUtil {
     public String getopenid(String appid,String code,String secret) {
         BufferedReader in = null;
         String code1 = code.toString();
         //appid和secret是开发者分别是小程序ID和小程序密钥，开发者通过微信公众平台-》设置-》开发设置就可以直接获取，
         String url="https://api.weixin.qq.com/sns/jscode2session?appid="
                 +appid+"&secret="+secret+"&js_code="+code+"&grant_type=authorization_code";
         try{
             URL weChatUrl = new URL(url);
             // 打开和URL之间的连接
             URLConnection connection = weChatUrl.openConnection();
             // 设置通用的请求属性
             connection.setConnectTimeout(5000);
             connection.setReadTimeout(5000);
             // 建立实际的连接
             connection.connect();
             // 定义 BufferedReader输入流来读取URL的响应
             in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
             StringBuffer sb = new StringBuffer();
             String line;
             while ((line = in.readLine()) != null) {
                 sb.append(line);
             }
             return sb.toString();
         }catch (Exception e) {
             throw new RuntimeException(e);
         }
         // 使用finally块来关闭输入流
         finally {
             try {
                 if (in != null) {
                     in.close();
                 }
             } catch (Exception e2) {
                 e2.printStackTrace();
             }
         }
     }
 }

